Floodlighting luminaire



April 12, 1966 D. E. HUSBY 3,246,135

FLOODLIGHTING LUMINAIRE Original Filed March 27, 1963 3 Sheets-Sheet 1 WITNESSES g /M )7. M

INVENTOR Donald E. Husby ATTORNEY April 12, 1966 D. E. HUSBY FLOODLIGHTING LUMINAIRE 3 Sheets-Sheet 2 Original Filed March 27, 9 5

88 E Fig.8.

A ril 12, 1966 D. E. HUSBY 3,

FLOODLIGHTING LUMINAIRE Original Filed March 27, 1963 5 Sheets-Sheet 5 United States Fatent O 3,246,135 FLQODLIGHTING LUMINAISRE Donald E. Busby, Fairview Park, Ohio, assignor to Westinghouse Electric Corporation, Pittsburgh, Pa., a corporation of Pennsylvania Continuation of application Ser. No. 268,273, Mar. 27, 1963. This application May 3, 1965, Ser. No. 456,024 3 Claims. (Cl. 2403) This application is a continuation of copending applicaticn S.N. 268,273, filed March 27, 1963, now abandoned, by the present inventor and owned by the present assignee.

This invention relates in general to luminaires and, more particularly, to an improved type of outdoor floodlighting luminaire which may be pivotally rotated in two directions to obtain floodlighting of particular areas.

As can readily be appreciated, in outdoor fioodlighting, it is highly desirable that the luminaires for such purposes be constructed so as to be readily installed, maintained and adjusted to illuminate various areas, in order to reduce the initial and operating cost of the luminaire. If such luminaires are elevated above the area to be illuminated, the use of a large number of tools for maintenance and adjustment purposes is unsatisfactory due to the inconvenience of using them at elevated heights. It is also desirable that the luminaires should be pivotally mounted to illuminate various areas. However, the mounting should be such that the luminaire cannot be moved in a manner so as to cause damage to the electrical supply lines to the luminaire. It is further desirable that the electrical components of the luminaire be readily accessible for maintenance and repair work.

Accordingly, one object of the invention is to provide a new and improved luminaire of the type which is supported above the ground and which may readily be serviced in the field.

Another object of the invention is to provide a new and improved luminaire of the type which is supported above the ground, and which luminaire has limited pivotal movement in two directions.

Another object of this invention is to provide a new and improved pivotally supported luminaire which has stops to limit the total rotation of the optical system in either direction about its pivot axis.

Still another object of the invention is to provide a new and improved luminaire having a unique optical arrangement which permits reduction of the size of the overall reflector portion and adjustment means therefor.

A further object of the invention is to provide a novel housing for the electrical components of the luminaire to simplify installation, maintenance and adjustment.

Still another object of the invention is :to provide a new and improved luminaire having a lampholder supported within a hub and means for adjusting the light source in the direction of the axis of the reflector.

These and other objects of the invention will become more apparent upon consideration of the following detailed description of luminaire constructed in accordance with the principles of the invention when taken in con junction with the attached drawings, in which:

FIGURE 1 is a side elevational view of a luminaire constructed in accordance with the principles of the invention having parts thereof broken away and shown in section;

FIG. 2 is a front elevational view of the luminaire of FIG. 1 having parts thereof broken away and shown in section;

FIG. 3 is an alternative mounting bracket arrangement for the floodlight portion of the luminaire of FIG. 1;

FIG. 4 is an enlarged sectioned view showing the ring and refractor assembly details;

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FIG. 5 is an enlarged sectioned view of the latch assembly for securing the ring and refractor assembly to the reflector housing;

FIG. 6 is an enlarged sectioned view showing the details of the hub assembly and lampholder mounting;

FIG. 7 is a cross sectional view of the hub assembly of FIG. 6 as taken along the lines VII-VII thereof;

FIG. 8 is a side elevational view of the hub assembly of FIG. 6 showing the lampholder adjustment details;

FIG. 9 is an enlarged cross sectional view of the transformer housing portion of the luminaire as shown in FIG. 1 with the dotted portion thereof showing the cover in a partially open position; and

FIG. 10 is a .top plan View, partially broken away, of the transformer case of FIG. 9.

Referring to FIGURE 1 of the drawings it will be noted that a luminaire constructed in accordance with the principles of the invention essentially comprises two main housings, the reflector housing, generally designated as 20, and the transformer housing generally designated as 22, with a generally U-shaped support how 24 connecting the two. As can be seen from FIGURES 1 and 2, the reflector housing 20 comprises a generally bowl-shaped reflector 26, the inner surface of which is reflectively coated or finished. The reflector 26 has a rim portion 28 about the periphery of the open end thereof, which is adapted to receive a ring and refractory closure assembly generally designated as 30. The ring and refractor assembly 30, at least a part of which is light transmitting, will be discussed in more detail later.

As best illustrated in FIGURE 2, secured to the outer surface of the reflector 26 are two projecting hub assemblies 32 which have a cup-shaped configuration, the openings of which mate with similar openings in the reflector 26. A lampholde-r 34 is secured within at least one hub 32 to support a light source 36, the light center 38 of which is disposed at the optimum optical position within the reflector 26. On the outer surface of each hub 32 there are outer projections 40 to Which the support how 24 is attached by handles 42 to provide means for pivotally rotating the reflector housing 20. The pivotal means will be described in more detail later.

Referring now to FIGS. 1, 2, 4 and 5 the ring and refractor assembly 30 comprises a generally L-shaped section ring 44 having a peripheral configuration similar to that of the reflector rim portion 28 and adapted to be received therein. The ring .44 is provided with a ridge 45 about the lower outer surface thereof. A refractor 46 having an outwardly extending flange 48 is positioned on the inwardly extending flange of the ring 44. As can best be seen in FIGURES 4 and 5 a gasket 59, which has a generally S-shaped section, has the lower portion thereof disposed about the refractor flange 48 in order to seal the ring to refractor junction, with the upper free portion of the gasket 50 conformed to contact the inner surface of the rim portion 28 of the reflector 26. The lower portion of the gasket 50 and the refractor flange 48 are secured to the ring 44 by means of a hook-shaped spring clip 52 which engages the ridge 45. The clip 52 has a lance portion 53 which engages the ring 44 to prevent withdrawal of the clip.

The ring and refractor assembly 3b is hinged at its forward end to the reflector rim portion 23 by means of a hinge assembly 56 of a suitable type. The ring and refactor assembly 3% is secured to the rim portion 28 by means of one or more latch assemblies 58 which are generally of the overcenter action type. Each latch assembly is secured to the upper surface of the reflector portion 28 with a hook-shaped spring portion engaging the lower surface of the ring 44 and retained by the ridge 45. When the latch assembly 58 is in its closed or operative position, the upper portion of the gasket 50 is compressed between the rrefractor flange 48 and the lower surface of the rim portion 28 in order to seal the optical system against the entry of dirt, moisture and insects. The refractor 46 may have prismatic surfaces thereon or may be made of clear glass, whichever is desired.

As best shown in FIGS. 1, 9 and 10, the transformer housing 22 comprises a transformer casing 60 and a transformer cover 62 hingedly secured thereto. The bight portion of the support bow =24 is secured to the forward end of the transformer case 60 by means of suitable fastening means such as a bolt 64. Just below the bolt 64 there is an aperture 66 located in the transformer case and a similar aligned aperture is provided in the support bow 24 for purposes of insertion of the supply cable from the electrical components in the transformer housing 22 to the electrical connectors on the lampholder 34. A suitable cable connector 68 is insorted in the aperture 66 to secure the supply cable and seal the same. A latch assembly 70, which is similar in operation to the latch assembly 58, clamps the transformer cover 62 in its closed position to the transformer case 60. The transformer housing 22 will be discussed in more detail later.

FIG. 3 shows an alternative form of mounting the reflector housing 29, should the use of the transformer housing 22 not be necessary. A generally L-shaped mounting bracket 72 has the bight portion of the support bow 24 secured to one portion thereof by means of a suitable fastener 74, and the other leg of the bracket 72 has an aperture 76 located there-in for securing the bracket to a stationary support (not shown). Such a support, for example could be a concrete pad, a steel bracket or some other such device.

Referring now to FIG. 6, the details of the hub assembly will be described in full. As can be seen, the hub 32 is' generally cup-shaped With an open end and is secured to the reflector 26 adjacent a similarly shaped aperture therein by a fastening means such as screws 80. Interposed between the reflector 26 and the hub 32 is a gasket 78 for purposes of sealing the hub and reflector against entry of dirt, moisture vand insects. The inner surface of the hub 32 is provided with projections or bosses 82 integral therewith for securing the lampholder 34 thereto. As can be seen in FIG. 6 and FIG. 8 there are suflicient bosses 8 2 to provide more than one possible position for securing the lampholder 34- in order to position the lamp 36 at one or more points should different lamps be used, or possibly to compensate for Variations in desired floodlighting. The lampholder 34 is provided with cars 84 having apertures therein for insertion of a fastening means such as a screw 86 to secure the lam-pholder 34 to a boss 82. As shown in the drawings only two positions are available for the lampholder 34, but it is to be understood that it is within the scope of the invention to provide a greater variation of lampholder positions, if so desired. The hub 32 is provided at its lower end with an aperture containing a packing gland or water-tight connector 88 through which the supply conductor 90' is inserted and secured to the contact 92 located on the lampholder base 34. On the axis of the hub 32 there is provided an outwardly extending projection 40 which has a threaded aperture 94 located therein. Positioned on the projection 40 is a washer 96 which has radial serrations on both outer surfaces thereof to assist in locking the reflector housing 26 in position, as best shown in FIGS. 6 and. 7. Projecting fromthe outer periphery of the washer 96 is a stop member 98. 'The stop member 98 may be integral with the washer 96 or may be fastened to it by suitable means. In the embodiment as shown, a set screw 100 extends through the serrated washer 96, and is used to position the stop member 98, wheresoever desired, by tightening against the projection 46. This" and after maintenance of the luminaire, the preset position can be readily established. The radially extending base 102 of stop member 98 at its maximum rotation will abut against a pin projection 104 extending through and secured to the support bow 24. One serrated surface of the washer 9'6 grips the base of the hub 32 While the other serrated surface engages the arms of the support bolw 24 adjacent the aperture 106 located therein, which is of a size suflicient to fit over the projection A clamping washer 108 abuts against the support bow 24 adjacent the aperture 106, and has a hole provided therein of approximately the same diameter as the threaded aperture 94 in the projection 40. A threaded bolt 110 is. inserted through the washer 198 into the threaded aperture 94 and tightened in order to lock the reflector housing 20 in position. In order to make this adjustment possible Without tools a handle 42 has a recess therein of the same size and shape as the head of the bolt 110. The handle 42 is placed on the head of the bolt 1'10 and secured thereto by suitable means such as a screw 1 12 inserted through the face of the handle 42 into a threaded aperture in the head of the bolt 110.

As can readily be seen from FIG. 6 and FIG. 7 the stop member 98 located on the serrated disk 96 provides a rotational limit for the reflector housing 20. This permits precise positioning initially and repositioning of the reflector housing 20 after any maintenance work performed thereon. Ordinarily a serrated disk 96 is provided on both hub assemblies 32 with a stop member 98 only on one of the hub assemblies 32. However, this does notp-reclude the possibility of a stop member on both hubs to limit the rotation in either direction. If desired, the serrated washer 96 may be secured to the projection 40 by means of the set screw 100, or by some other equivalent method.

Referring now to FIGS. 9 and 10 the details of the transformer housing 22 Will be discussed in detail. The transformer case is of a generally bowl-shaped configuration having a tapering depth from the forward to the rearward portion, and a ledge portion 114 around the periphery thereof. Inwardly of the ledge portion 114 there is a vertically extending l-ip portion 116 around the inner periphery of the transformer case 60. The cover 62 follows the general configuration of the ledge portion 114 and has a downwardly extending tongue portion 11-8 abutting against the ledge portion 114 in the closed operative position. Transformer cover 62 is hinged at its rearward end to the transformer case by suitable hinge means 120, and latched at its forward end by the clamp assembly secured to the underside of the ledge portion 114, and engaging a detent 122 in the top surface of the transformer cover 6-2. The clamp assembly 70 is of the well known overcenter action type, and other suitable fastening means may be used.

As can be seen in FIG. 10, the transformer case 60 has located in the bottom thereof a circular mounting hole 124 and an arcuate opening 126 concentric therewith. A bolt (not shown) is inserted through the opening 124 and a second bolt spaced therefrom is inserted through the opening 126. With the bolts in a loosened position, lateral adjustment of the luminaire is possible within the range provided by the arcuate opening 126 and at the desired position both bolts may be tightened to secure the luminaire in position. An opening 128 is also located in the rear portion of the transformer case 60 for insertion of a suitable water-tight connector 130 to provide entry for power conductors.

As shown more clearly in FIG. 9, the necessary lamp ballast components are secured to a mounting plate 132 which is in turn secured to bosses 134 integral with the underside of the transformer cover 62 by means of suitable fastening means such as screws 136. As the cover is opened (as partially shown in dotted lines) the electrical components therein are readily accessible since they are secured to the top cover. This also permits any desired adjustment to the lateral position of the luminaire to be readily performed. The electrical connectors (not shown) are of suflicient length to permit opening of the cover to its maximum desired position. If desired, stop members can be attached to the hinged portion 120 to limit the opening of the cover 62.

As can be readily seen the present luminaire provides rotation in two directions, laterally by means of the pivotal mounting hole 124 and the arcuate opening 126, and vertically by means of the hub assembly 32 and the means of fastening to the support bow 24. Additional optical system adjustment is provided by the two socket positions within the hub assembly 32, whereby the lampholding means are adjustable in a direction perpendicular to the axis of the light source 36.

While there has been shown and described what is at present considered to be the preferred embodiment of the invention, modifications thereto will readily occur to those skilled in the art. It is not desired, therefore, that the invention be limited to the specific arrangement shown and described.

I claim as my invention:

1. A luminaire comprising:

a generally bowl-shaped reflector housing having an at least partially light-transmitting closure assembly covering the open end thereof;

a pair of axially aligned hubs projecting from and secured to the outer surface of said housing along a line generally parallel to the open end of said housan aperture in said reflector housing communicating with at least one of said hubs;

lampholding means in the hub adjacent said aperture to support alight source within said reflector housing;

a transformer housing having a case member and a hinged cover member;

a generally U-shaped support bow having a bight portion and arm portions, said bight portion being secured to said transformer case member, said arm portions being pivotally secured to said hubs for rotation of the reflector housing about the axis through said axially aligned hubs;

locking means engaging said hubs and said arm portions to secure said reflector housing in its desired position;

pivotal fastening means in said transformer case member permitting rotation of said luminaire in a plane transverse to the plane of rotation of said reflector housing; said fastening means being accessible only when the cover member is opened;

electrical components within said transformer housing and being secured to said hinged cover member;

and cable means for electrically connecting said elec trical components to the lamp and to an external source of power.

2. A luminaire comprising:

a generally bowl-shaped reflector housing adapted to contain a lamp and having an at least partially lighttransmitting closure assembly covering the open end thereof;

a separate transformer housing having a case member and an upwardly opening hinged cover member;

a support member affixed to said transformer housing and said reflector housing for supporting said reflector housing;

a lampholder afiixed to said support member and extending into said reflector housing;

pivotal luminaire fastening means disposed in the lower portion of said transformer case member permitting rotation of said luminaire in a horizontal plane;

electrical lamp ballast and circuit components within said transformer housing and secured to the underside of said hinged cover member; and

cable means for electrically connecting said electrical components to the lamp and to a source of power.

3. The luminaire as specified in claim 2, wherein said pivotal luminaire fastening means extends through the bottom of said transformer housing directly under said lamp ballasts when said cover member is in the closed position, said fastening means being readily accessible from above when said cover member is in the open position.

References Cited by the Examiner UNITED STATES PATENTS 1,977,883 10/1934 Levy 240-3 2,434,986 1/1948 Bremer 240-73 2,491,448 12/1949 Hillenbrand et a1. 240-81 2,584,671 2/1952 Cator et al. 240-147 X 2,797,312 6/1957 Fletcher 240-4155 2,907,870 10/1959 Calmes 240-3 2,967,230 1/1961 Goetz et al. 240-3 2,970,222 1/ 1961 Husby et a1 240-25 X 3,096,029 7/1963 Berge 240-25 3,096,031 7/1963 Feldman et al 240-442 3,170,634 2/1965 Harling 240-25 NORTON ANSHER, Primary Examiner.

EVON C. BLUNK, Examiner.

CHARLES C. LOGAN, Assistant Examiner. 

2. A LUMINAIRE COMPRISING: A GENERALLY BOWL-SHAPED REFLECTOR HOUSING ADAPTED TO CONTAIN A LAMP AND HAVING AN AT LEAST PARTIALLY LIGHTTRANSMITTING CLOSURE ASSEMBLY COVERING THE OPEN END THEREOF; A SEPARATE TRAMSFORMER HOUSING HAVING A CASE MEMBER AND AN UPWARDLY OPENING HINGED COVER MEMBER; A SUPPORT MEMBER AFFIXED TO SAID TRANSFORMER HOUSING AND SAID REFLECTOR HOUSING FOR SUPPORTING SAID REFLECTOR HOUSING; A LAMPHOLDER AFFIXED TO SAID SUPPORT MEMBER AND EXTENDING INTO SAID REFLECTOR HOUSING; PIVOTAL LUMINAIRE FASTENING MEANS DISPOSED IN THE LOWER PORTION OF SAID TRANSFORMER CASE MEMBER PERMITTING ROTATION OF SAID LUMINAIRE IN A HORIZONTAL PLANE; ELECTRICAL LAMP BALLAST AND CIRCUIT COMPONENTS WITHIN SAID TRANSFORMER HOUSING AND SECURED TO THE UNDERSIDE OF SAID HINGED COVER MEMBER; AND CABLE MEANS FOR ELECTRICALLY CONNECTING SAID ELECTRICAL COMPONENTS TO THE LAMP AND TO A SOURCE OF POWER. 